12925638 has 48 divisors (see below), whose sum is σ = 30912336. Its totient is φ = 3870720.

The previous prime is 12925637. The next prime is 12925663. The reversal of 12925638 is 83652921.

12925638 is a `hidden beast` number, since 1 + 2 + 92 + 563 + 8 = 666.

12925638 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12925631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18870 + ... + 19542.

It is an arithmetic number, because the mean of its divisors is an integer number (644007).

Almost surely, 2^12925638 is an apocalyptic number.

12925638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12925638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15456168).

12925638 is an abundant number, since it is smaller than the sum of its proper divisors (17986698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12925638 is a wasteful number, since it uses less digits than its factorization.

12925638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789 (or 786 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 12925638 is about 3595.2243323609. The cubic root of 12925638 is about 234.6842779949.

The spelling of 12925638 in words is "twelve million, nine hundred twenty-five thousand, six hundred thirty-eight".